You may want to create a visual sense of depth on your network or simply place borders around elements within your site- this is how to do this using CSS and the advanced section in your appearance dashboard (old editor). What I am about to show you is a simple tutorial for taking an image and placing it on the border of any element on your network. You can see the result live on my network for land surveyors.

For the purposes of this discussion, we will be adding a border around the #xg_body, .xg_bodybg portions of a ning site, sitewide.

Let's begin. I will first tell you about two helpful CSS3 generator sites which are helpful for achieving this if you are unfamiliar with CSS.